The discovery of a ghost at the Gettysburg Battlefield is just the beginning of many adventures for three young friends.

Chucky, Zach, and Philip decide to plant a garden after Mr. Baxter tells them they can sell the produce in the Cavalry Ridge Campground General Store. If they save enough money they might be able to buy the dazzling new Swiss camping knife that has just come in.

While digging in the garden plot, Chucky unearths an old relic. It looks like a coin, but it's not. The three friends pass around the piece of metal, rubbing off dirt and trying to read the inscription. Suddenly, the air grows cool and a shadow falls across the garden. The boys feel their skin begin to tingle, and a heaviness settles over them. The fuzzy, disjointed shape of a man begins to form before their eyes. What has Chucky dug up?